NEED HELP FAST ILL MARK BRAINLIEST AND RATE 5 STARS AND SAY THANK YOU (50 points)
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The average speed is the ratio between the distance covered, and the time elapsed to cover that distance.
The total distance is the sum of the three distances covered:
Similarly, the total time elapsed is
So, althought you didn't always travelled with the same speed, you globally covered 170km in 1.75 hours. This leads to an average speed of